2281431 has 4 divisors (see below), whose sum is σ = 3041912. Its totient is φ = 1520952.

The previous prime is 2281429. The next prime is 2281481. The reversal of 2281431 is 1341822.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2281431 - 2¹ = 2281429 is a prime.

It is a super-2 number, since 2×2281431² = 10409854815522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2281398 and 2281407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2281481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380236 + ... + 380241.

It is an arithmetic number, because the mean of its divisors is an integer number (760478).

2^2281431 is an apocalyptic number.

2281431 is a deficient number, since it is larger than the sum of its proper divisors (760481).

2281431 is an equidigital number, since it uses as much as digits as its factorization.

2281431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760480.

The product of its digits is 384, while the sum is 21.

The square root of 2281431 is about 1510.4406641772. The cubic root of 2281431 is about 131.6444171844.

The spelling of 2281431 in words is "two million, two hundred eighty-one thousand, four hundred thirty-one".